It takes a serious set of stones to openly challenge the dude who knocked out another professionally trained fighter in 13 seconds a week ago. We don't know if Diaz was severely concussed, caught up in the post fight exhilaration, or if he actually wants to take on the bada** irishman.

One thing's certain, and that's that 'he can't talk like that on Fox.'

An unexpected supporter has come to the defense of MMA fighter Ronda Rousey.

Floyd Mayweather talked to Fight Hype about Rousey and her recent loss to Holly Holm at UFC 193.

He started by saying that he definitely didn't tell 50 Cent to mock Rousey on Instagram with a meme, and he has nothing against MMA fighters.

"That's not true at all. I haven't really spoke to anyone about the Ronda Rousey situation, just to set the record straight. I don't have anything against MMA fighters. It's just like boxing; you win some, you lose some. A true champion can take a loss and bounce back."

He's not a fan of Internet bullying and trolling after Rousey's knockout loss.

"I don't think it's cool how everyone is trolling her on social media. Certain things you have to learn. People will love you on Friday and then Sunday morning, it's nothing but negative comments and people making jokes and people making fun about you, which I don't think is cool. I've never been on the other side, so I don't know how it feels. I'm pretty sure she's a very, very strong person, but we still have to take into consideration that she has feelings."

His rush to defend Rousey is unexpected, especially given their shaky past.

In the age of the Internet and viral news stories, people will believe anything.

With a crazy idea that makes you think "Hmmm...that could actually be believable," you can convince the public of just about whatever you want.

This brings us to Rumblr, a soon-to-be mobile app dubbed the "Tinder of street fighting." The app, which supposedly allows users to match with other people in their area who want to fist fight, was featured on over 200 blogs and websites this week.

Turns out, this was just a stupid marketing stunt to launch a creative agency. Not even a cool marketing stunt.

"Rumblr started as a portfolio project to help us launch our creative consulting agency, von Hughes. We're a team of college dropouts with backgrounds in marketing, design, and engineering. Rumblr came about organically as a funny idea amongst a group of friends, but quickly budded into an opportunity to showcase our branding skills."